{"uid":"cap_uIay96MIGfq3Q1vmbN963","slug":"quantaflow-x402-api-gateway-alchemy-superseed-mainnet-5b6e0875","name":"QuantaFlow x402 API Gateway — Alchemy Superseed Mainnet","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/alchemy-superseed-mainnet?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uBd5fShL4bHifKRPnbg47","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proxies paid API requests to the Alchemy Superseed mainnet RPC/data endpoint, charging $0.01 USDC per call via the x402 payment protocol.","exampleAgentPrompt":"Look up the latest block number on Superseed mainnet using the Alchemy endpoint — forward a GET request to /v2/eth_blockNumber with no body.","exampleUseCases":[{"title":"Wallet balance check on Superseed","prompt":"Check the ETH balance of wallet address 0xABC123 on Superseed mainnet — call eth_getBalance through the Alchemy Superseed node."},{"title":"Smart contract read on Superseed","prompt":"Read the totalSupply value from the ERC-20 contract at 0xDEF456 on Superseed mainnet using Alchemy's eth_call endpoint."},{"title":"Transaction status lookup","prompt":"Look up the status of transaction 0x789abc on Superseed mainnet via Alchemy — I need to know if it was confirmed."}],"resultDescription":"The raw upstream response from Alchemy's Superseed mainnet API is passed through transparently after the $0.01 USDC x402 micropayment is confirmed, preserving the original content type and body.","failureModes":["Payment failure: insufficient USDC balance or x402 payment not accepted — request blocked before forwarding","Invalid path: upstream Alchemy endpoint returns 404 or 400 if the path or method is unsupported","Upstream error: Alchemy node returns 5xx or RPC error if the Superseed mainnet node is unreachable","Malformed body: JSON parse error if the body string is not valid JSON for a POST request","Rate limiting: Alchemy may throttle requests exceeding their node limits even after payment"],"whenToPreferThis":"Use this endpoint when you need metered, pay-per-call access to Alchemy's Superseed mainnet node without managing a dedicated Alchemy API key, and you want to pay per request via x402 USDC micropayments. Prefer this over direct Alchemy API access when building agent workflows that require cost-proportional billing or when integrating into x402-native payment pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:50:02.672Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-superseed-mainnet-5b6e0875"}